Buffing operation



P 1929- F. L. YERGES ,585

BUFFING OPERATION Filed Jan. 4. 1926 2 Sheets-Shet 1 INVENI'TEI K T NEY Se t. 17, 1929.

F; L. YEIRGES BUFFING OPERAT ION Filed Jan. 4, 1926 2 Sheets-Sheet 2 INVENTE] M M" i Patented Sept. 17, 1929 UNITEDTSTATES PATENT OFFICE IRANK L. YERGES, OF FREMONT, OHIO; AMELIA N. YERGES, EXECU'JQIRIIX F SAID 1mm: 1.. mens,

DECEASED, ASSIGNOR TO THE YERGES MANUFACTURING COM- PANY, OI FREMONT, OHIO, A CORPORATION OF OHIO BUFFING OPI 'IRATION Application filed January 4, 1926. Serial No. 79,208.

This invention relates to fabric buffers of the warp and woof type wherein there is impregnation thereof with substance which decreases tendency for the fabric to fray,

whilethere may be a material increase in the quantity of work which may be performed with said buffer before wearing out.

This invention has utility when incorporated in fireproof fabric 'bufling wheels which wheels may carry composition for the dressing, grindlng, polishing and giving color to metal. The higher speed hereunder possible for such wheels is a factor for increased buffing rigidity for notwithstanding the rise in temperature dangers from ignition are reduced. 4 1

Referring to the drawings:

Fig. 1 is a side view of a fabric disc built up buin'ng wheel section of this fire-proof loaded material;

' Fi 2 is an enlar ed detail view showing the c aracter of thediufling edge before use;

Fig. 3 is a view similar to Fig. 2 showing the edge or fray fromuse;

2 a Fig. 4 is a side elevation of the bufling disk of the same material as in Fig. 1 as to warp and woof independently of impregnation loading or fire-proofing;

Fig. 5 is an enlarged detail view of a portion of the frayed ed e of Fig. 4 as unused; Fig. 6 is a view of t e disk of Fig. 4, after use;

v Fi 7 is a view ofan enlarged portion of the dlSO of Fig. 6, showin the fray after use;

Fig. 8 is a side view 0 an-assembled bufiing jack with a plurality of sections of Fig. 1 assembled thereon and setup for high speed use; and A V Fig. 9 is a view in side elevation of a stitched bufling section illustratin how the bufing wheel may be further sti sued to a desired extent by stitching, there being used in this instance both theories-cross as we as the spiral stitching in the event it is desired to ave either one supplement the other. Pl 1 is shown as comprising warp and woe threads. These plies are assembled by stitching 2 about central opening 3 to build up a section 4. These sections 4 of the plies 1 are staggered relatively to each other or angularly shifted as to the warpand woof as assembled into wheel 5 on shaft 6 as clamped in position by nut 7. This shaft 6 is mounted 'in bearings 8 and is driven by pulley 9.

Brackets 10 carry this shaft 6 on pedestal 11.

In the carrying out of this invention, ap-

plicant takes this warp and woof cotton stock or canvas and subjects it to a saturated solution of aluminum sulphate. After thus thor oughly soaked, the material is dried in an oven at approximately 80 C. Thereafter it is boiled for fifteen minutes ina saturated solution of magnesium carbonate. This dried material has undergone. a gain in weight due to this loading by the fireproofing material,

but this gain in weight is not to an extent to promote brittleness, say as by forming incrustations on the surface of the material of the plies. Furthermore, it lacks the flexibility whichthematerial had before such treatment, while there isstill retained such measure of flexibility that work to'be treated as thrust into position at the periphery of the rotating wheel at normal polishing pressures may be partially embedded in such wheel periphery as the work is undergoing the cutting or polishing action. By thus or otherwise buildmgv up the ignition point at which this fabric may tend to burn, the allowable frictional heat, due to operation, is increased materially permitting greater wheel speed, and even a greater cutting or effective treatment rate independently of increase in speed, due to the impre nation. This greater speed combined with t e eater loading weight of the buffer gives the ufling wheel a greater radial rigidity for standing out against the work as forced thereinto even though the buffer be of what may be termed the loose or unstitched type having merely the central assembly stitching-2. Accordingly, there may be a greater range for temperature coloring of ll the metal treated. v The high speed of 0peration means a greater quantity or output in a less time reducing the factory overhead'as well as the production cost. The wheel, due to its general open structure, may have the composition worked thereinto very readily. The mass of the individual plies, due to this perceptible weight increase on account of the loading, co-operates under greater speed of rotation for a proportional increase in momentum according to the velocity. There is thus imparted a greater uniform peripheral rigidity as to render the wheel exceptionally effective in 0 eration. As herein disclosed the fireproo g treatment of fabric has brought into the bufling art a material ad- Vance, not only as toeconomies directly in the bufling wheel efficiency in lieu of former current practices and even at such lineal speeds and working pressures. However, these attributes of value are believed to be peculiar to the fireproofing as the results are beyond mere bleaching. The'wheel has a eripheral softness for thrusting into the wor but still a cutting efiectiveness for elficient clearing out and finishing depressions and difiicultly accessible regions in the work. The manufacturing economies have even extended into permitting omissions of steps in preparation for and finishing operations, an instance of which is in annealed brass surfaces bearing scale,

where heretofore it has been necessary to rough grind to remove the scale and then with warp and woof of adjacent plies staggered, the section being peripherally loose for receiving application of polishing composition thereinto during use rotation alternately with permitting partial embedding of work peripherally into the buiiing wheel of said sections while said sections away from said work are maintained in approximately circular form resistant to fraying and ignition and with cutting speed and work pressure capacity above that of such material not thus treated, and thereby lengthening the service and improving the o eration thereof.

In witness whereo I aflix my signature.

FRANK L. YERGES.

polish for thereafter plating, while hereunder this bufi is efiective for scale removal and plating surface preparation.

The treatment for the fireproofing, as herein disclosed, is of the fabric after having been woven and seals the warp as to the woof against fraying even at the initial cutting as shown inFi 2, and supplements such holding even un er the resistance of work operations to a degree for the used bufier (Fig. 3) for approximately less fray even than the unimpregnated similar material buffer of Figs. 4, 5, while the unimpregnated buff as undergoing like work "conditions has a greatly increased fra showing of Figs. 6, It, accordingly, ollows, that this impregnation in loading bufiers permits high speed of operation with generation of greater friction because of the fireproofing and with additional ly, due to the fireproofin'g, a greater stiffness as well as a greater weight effecting a more safe holding action so that there is in effect a substantial bufiing wheel independently of clamping, stitching or other assembly. Al-

though if stitching of a. type or combined types as criss-cross, spiral alone, or such combined is desired such may be more open than for a similar rigidity non-fi'reproofed buffer wheel.

What is claimed and it is desired to secuie by United States Letters Patent is:

A bufling wheel section comprising warp and woof fabric disk-shaped independent plies of fireproofing impregnated material of increased masswith such absence of surface incrustations from the impregnations as to still retain peripheral flexibility for partiall embedding work thereinto in normal wor treatment, and assembly means for uniting the plies in parallel in a unit of circular form 

